Kayak Fish Finder Batteries

One of the hardest choices for me was what battery to use with my kayak and fish finder...there are a couple common choices, either Seal Lead Acid types or Lithium Ion. Both have some advantages and disadvantages. I ended up going with a Nocqua Pro Power Kit 10Ah lithium Ion battery...it is small, light, and easy to use.
One major question I had was how long would my battery actually last as far as powering my fish finder, so I hooked up my camera to find out.
It was way longer than I expected, even with max brightness and the transducer attached. I timed how long it took to take my Garmin Striker 4 down to 10V which is the minimum recommended voltage.
It ended up running for 36 hours non stop before voltage dropped to 10V...pretty impressive IMO.

The Nocqua costs about twice that, but I can tell you it is super light, portable, and easy to use. If your ever in need of a new battery it's worth a look...and FYI I am not associated with them in anyway...just honestly love the product for my uses.

I use a 2300 mA/h @16VDC battery designed for an RC car. Hobby town USA carries everything.
They are weatherproof by design and cost $35 (+$40 for the charger). It is no bigger than a pack of cigs. It will get my lowrance elite 5 about 6 hours under normal daytime brightness.
PM for specs.

That's great info on run time. I built a battery box using a dry box from walmart, a 12v 7.5ah battery - one of the ones you find as a verizon fios backup battery, and a 12v cigarette outlet. The box fits perfectly in the hatch on my kayak and the plug and play ease of the cigarette outlet makes setup easy - and I can charge my phone if I need to and the trickle charger I have also plugs into the cigarette outlet. Very easy to deal with, just a little on the heavy side since it's not a lithium battery.